The caster creates an opaque area of swirling energy in the form of roaring, screeching mouths full of teeth.Anyone within the area takes 1d8 points of damage for every two caster levels (maximum 10d8) from the magically created biting mouths and tearing teeth.The whirlwind moves as the caster mentally directs (as a free action), with a speed of 40 feet.Arcane Material Component: A handful of bloody teeth.